Continuity mistake: Fang placed the shoebox almost parallel to the front door, but it was at a different angle when Luke saw and was approaching it. (01:12:29 - 01:14:14)
Revealing mistake: When Mary is talking to Luke in the kitchen, there are "moving shadows" on the wall to the left of the screen, apparently from the camera/film crew. (00:19:40)
Revealing mistake: Most of the car scenes entailed rain on the windows even though it otherwise had not been and was not raining, indicating the scenes were filmed on a rainy day. For example: Mary driving home; picking up Todd to go to the funeral; driving home from the church; driving back from rock climbing; and, Faith's car when she got to Luke's house. (00:17:35 - 01:34:12)
Deliberate mistake: Luke had a box of T-shirts he designed and Faith reached into the box and removed the top T-shirt. Without looking at the size or even holding it up to her body to see if the T - shirt would fit, Faith asked, "How much?" Luke replied, "Ten" [dollars]. Faith reached into her pocket, pulled out a wad of bills and handed it to Luke without counting the money. Faith put the T-shirt on over her top and it was a "perfect fit." (00:03:55 - 00:04:37)